public InvOpRec(Opcode opcode, string fmt)
{
this.opcode = opcode;
this.fmt = fmt;
}
private Tlcs900Instruction Decode(byte b, Opcode opcode, string fmt)
{
var instr = new Tlcs900Instruction
{
Opcode = opcode,
Address = this.addr,
};
var ops = new List <MachineOperand>();
MachineOperand op = null;
for (int i = 0; i < fmt.Length; ++i)
{
switch (fmt[i++])
{
case ',': continue;
case 'C': // condition code
var cc = (CondCode)(b & 0xF);
if (cc == CondCode.T)
{
continue;
}
op = new ConditionOperand(cc);
break;
case 'A':
op = new RegisterOperand(Tlcs900Registers.a);
break;
case '3': // Immediate encoded in low 3 bits
var c = Constant.Create(Size(fmt[1]), imm3Const[b & 7]);
SetSize(fmt[1]);
op = new ImmediateOperand(c);
break;
case 'I': // immediate
op = Immediate(fmt[i++]);
break;
case 'j': // Relative jump
switch (fmt[i++])
{
case 'b':
byte o8;
if (!rdr.TryReadByte(out o8))
{
op = null;
}
else
{
op = AddressOperand.Create(rdr.Address + (sbyte)o8);
}
break;
case 'w':
short o16;
if (!rdr.TryReadLeInt16(out o16))
{
op = null;
}
else
{
op = AddressOperand.Create(rdr.Address + o16);
}
break;
}
break;
case 'J': // Absolute jump
switch (fmt[i++])
{
case 'w': op = AbsoluteDestination(2); break;
case 'l': op = AbsoluteDestination(3); break;
default: op = null; break;
}
break;
case 'R': // 16 bit register encoded in lsb
op = new RegisterOperand(Reg(fmt[i++], b & 0x7));
break;
case 'S': // status/flag register
op = StatusRegister(fmt[i++]);
break;
}
if (op == null)
{
return(Decode(b, Opcode.invalid, ""));
}
ops.Add(op);
}
if (ops.Count > 0)
{
instr.op1 = ops[0];
if (ops.Count > 1)
{
instr.op2 = ops[1];
if (ops.Count > 2)
{
instr.op3 = ops[2];
}
}
}
return(instr);
}
public OpRec(Opcode opcode, InstrClass iclass, string fmt)
{
this.opcode = opcode;
this.iclass = iclass;
this.fmt = fmt;
}
public SecondOpRec(Opcode opcode, string fmt)
{
this.opcode = opcode;
this.fmt = fmt;
}
public OpRec(Opcode opcode, string fmt) : this(opcode, InstrClass.Linear, fmt)
{
}
private static OpRec Instr(Opcode opcode, InstrClass iclass, params Mutator <Tlcs900Disassembler>[] mutators)
{
return(new OpRec(opcode, iclass, mutators));
}
public InvOpRec(Opcode opcode, params Mutator <Tlcs900Disassembler>[] mutators)
{
this.opcode = opcode;
this.mutators = mutators;
}
public SecondOpRec(Opcode opcode, Mutator <Tlcs900Disassembler> mutator = null)
{
this.opcode = opcode;
this.mutator = mutator;
}
public OpRec(Opcode opcode, InstrClass iclass, Mutator <Tlcs900Disassembler>[] mutators)
{
this.opcode = opcode;
this.iclass = iclass;
this.mutators = mutators;
}